4 Best Sights in The Amazon Basin, Peru

Changes in the course of Amazon tributaries have created countless oxbow lakes, which are formed when the riverbed shifts and the abandoned bend fills with water. Lago Sandoval, created by the Madre de Dios River, lies just inside the Tambopata National Reserve, a short trip form Puerto Maldonado. It is a lovely sight, hemmed with lush jungle and a wall of aguaje palms on one end. It is also an ideal spot for wildlife-watching. Herons, egrets, kingfishers, and other waterfowl hunt along its edges; several species of monkeys forage in the lakeside foliage; and chestnut-fronted macaws fly squawking overhead. A family of elusive giant otters lives in Lake Sandoval, making it one of the few places you can hope to see that endangered species. The lake is a 30-minute boat ride east from Puerto Maldonado. Once you disembark, there's a flat-but-muddy 3-km (1.8-mi) hike to a dock in the aguaje palm swamp from where you'll be rowed to the actual lake. Unfortunately, Sandoval is very popular, so you'll see plenty of tourists on the trail and lake. Fewer people visit the lake in the afternoon, but it is best experienced by spending a night or two at the Sandoval Lake Lodge.

Scientists consider the Manu Biosphere Reserve to be one of the most biodiverse places on earth, and much of its vast wilderness has barely been studied, since it is still home to uncontacted indigenous groups. Straddling the boundary of the Madre de Dios and Cusco provinces, the reserve is Peru's second-largest protected area, encompassing more than 4½ million acres of pristine tropical forests. Its extraordinary biological diversity is in part due to its precipitous terrain, which ranges in altitude from 3,450 meters (12,000 feet) down to 300 meters (less than 1,000 feet). This geographical diversity results in varied ecosystems—from high-altitude puna grasslands to luxuriant cloud forest and seemingly endless rainforest—which, in turn, shelter a stunning range of flora and fauna. To top it off, a near-total absence of humans means that the animals here are less skittish and more easily observed.

Whereas Manu's highland cloud forest is home to dozens of hummingbird species, the spectacular cock-of-the-rock, and the Andean bear (aka spectacled bear), the reserve's lower parts hold most of its more than 200 mammal species, including 13 species of monkeys, which scrutinize visitors with the same curiosity they elicit. White caimans sun themselves on sandy riverbanks, while the larger black caimans lurk in the oxbow lakes. With luck, you may see a tapir, giant river otter, or one of the region's elusive jaguars. You are bound to see a sampling of the avian life that has made Manu world-famous. The area counts more than 1,000 bird species, one-ninth of those known to science. They include several species of macaws, toucans, jacamars, cocoi herons, harpy eagles, razor-billed currasows, blue-headed parrots, and horned screamers. Manu is also home to hundreds of colorful butterfly species and an array of ants, beetles, and spiders, as well as millions of mosquitoes, so be sure to take an ample supply of insect repellent.

A UNESCO World Heritage Site, the Biosphere Reserve is divided into three distinct zones. The smallest, and most accessible, is what's known as the "cultural zone," home to several indigenous groups and the majority of the jungle lodges. Access is permitted to all—even independent travelers, in theory—though it would be extremely difficult to visit it on your own. About three times the size of the cultural zone, Manu's "reserved zone" contains various nature lodges, which can only be visited on a guided tour with one of a dozen agencies authorized to take people into the area. The western 80% of Manu is designated a national park and is closed to all but authorized researchers and the indigenous peoples who reside there.

This small museum housed in a pale-blue building on the Malecón Tarapacá has an impressive collection of colorful headdresses made from the feathers of jungle birds and an array of other traditional handiwork by the main Amazonian tribes. If you're interested in indigenous cultures, you won't want to miss it. The displays include a wealth of information about the lives of the Amazon Basin's native peoples and an array of artifacts collected in Peru, Brazil, Colombia, and the Guianas over the course of decades. Items range from the quotidian (clothing, paddles, woven bags) to the ceremonial (musical instruments, headdresses, necklaces with the teeth of jungle animals). Among the more striking items are the jewelry, embroidered cloths and cushmas (tunics), painted ceramic wares, blow guns, spears, bows and arrows, and ceremonial headdresses.

A vast expanse of protected wilderness stretches eastward from Puerto Maldonado to Bolivia and southward all the way into the Andean foothills. Its forests, rivers, palm swamps, and oxbow lakes are home to hundreds of bird and butterfly species, monkeys, tarantulas, turtles, and countless other jungle critters. This amazing natural diversity can be experienced from any of a dozen nature lodges scattered along the Madre de Dios River, the Tambopata River,which flows into the Madre de Dios at Puerto Maldonado, or the more distant Heath River.

Together, the contiguous Tambopata National Reserve and Bahuaja-Sonene National Park protect 3.8 million acres: an area the size of Connecticut. Several indigenous Ese'eja communites border the park; "Bahuaja" and "Sonene" are the Ese'Eja names for the Tambopata and Heath rivers, respectively. The Río Heath forms Peru's southeastern boundary with neighboring Bolivia, and the former Pampas de Río Heath Reserve, along the border, is now incorporated into Bahuaja-Sonene. It includes a looks-out-of-place "pampas" ecosystem that resembles an African savannah more than the lush Amazon forest that borders it.

Peru collaborates on conservation with Bolivia, whose adjoining Madidi National Park forms a vast, cross-border protected area that covers 7.2 million acres. Only environmentally friendly activities are permitted in Tambopata. In addition to participating in tourism, local communities collect castañas, or Brazil nuts, from the forest floor, and aguaje palm fruit in the swampland.

Elevations here range from 500 meters (1,640 feet) to a lofty 3,000 meters (9,840 feet), providing fertile habitat for an astounding diversity of animals and plants. The area holds a world record in the number of butterfly species (1,234). These protected areas contains Peru's largest collpas, or clay licks, which are visited by more than a dozen parrot, parakeet, and macaw species each morning. They congregate at dawn to eat the mineral-rich clay in the steep riverbank.